Finding the Fourth Proportional to 72,443.96, 99,968.46 and 40,607

Step by Step Solution

1. Step 1: Write the proportion equation
   72,443.96 : 99,968.46 = 40,607 : x
2. Step 2: Convert to fraction form
   72,443.96/99,968.46 = 40,607/x
3. Step 3: Cross multiply
   72,443.96x = 99,968.46 × 40,607
4. Step 4: Simplify right side
   72,443.96x = 4,059,419,255.22
5. Step 5: Solve for x
   x = 4,059,419,255.22/72,443.96
6. Step 6: Final answer
   x = 56,035.30